clock_adjtime: use small lock to protect g_adjtime_ppb g_adjtime_wdog

reason: We would like to replace the critical section with a small lock. Signed-off-by: hujun5 <[email protected]>
apache · Dec 11, 2024 · d88c2de · d88c2de
1 parent 5607eec
commit d88c2de
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/sched/clock/clock_adjtime.c b/sched/clock/clock_adjtime.c
@@ -49,6 +49,7 @@
 
 static struct wdog_s g_adjtime_wdog;
 static long g_adjtime_ppb;
+static spinlock_t g_adjtime_lock = SP_UNLOCKED;
 
 /****************************************************************************
  * Private Functions
@@ -108,7 +109,7 @@ static int adjtime_start(long long adjust_usec)
       ppb = -ppb_limit;
     }
 
-  flags = enter_critical_section();
+  flags = spin_lock_irqsave(&g_adjtime_lock);
 
   /* Set new adjustment */
 
@@ -134,7 +135,7 @@ static int adjtime_start(long long adjust_usec)
       wd_cancel(&g_adjtime_wdog);
     }
 
-  leave_critical_section(flags);
+  spin_unlock_irqrestore(&g_adjtime_lock, flags);
 
   return ret;
 }